2e5576dafc
In previous patch we switched to use SessionClient in all cases. It means that all HTTPClient code is redundant now. Change-Id: I5a0da970fd82c79db3d88f1b49279133bbdba639
89 lines
3.3 KiB
Python
89 lines
3.3 KiB
Python
# Copyright 2014 NEC Corporation. All rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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version interface
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"""
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from six.moves import urllib
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from novaclient import base
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from novaclient import exceptions as exc
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class Version(base.Resource):
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"""
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Compute REST API information
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"""
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def __repr__(self):
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return "<Version>"
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class VersionManager(base.ManagerWithFind):
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resource_class = Version
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def _get_current(self):
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"""Returns info about current version."""
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# TODO(sdague): we've now got to make up to 3 HTTP requests to
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# determine what version we are running, due to differences in
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# deployments and versions. We really need to cache the
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# results of this per endpoint and keep the results of it for
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# some reasonable TTL (like 24 hours) to reduce our round trip
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# traffic.
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try:
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# Assume that the value of get_endpoint() is something
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# we can get the version of. This is a 404 for Nova <
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# Mitaka if the service catalog contains project_id.
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#
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# TODO(sdague): add microversion for when this will
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# change
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url = "%s" % self.api.client.get_endpoint()
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return self._get(url, "version")
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except exc.NotFound:
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# If that's a 404, we can instead try hacking together
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# an endpoint root url by chopping off the last 2 /s.
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# This is kind of gross, but we've had this baked in
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# so long people got used to this hard coding.
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#
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# NOTE(sdague): many service providers don't really
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# implement GET / in the expected way, if we do a GET
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# /v2 that's actually a 300 redirect to
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# /v2/... because of how paste works. So adding the
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# end slash is really important.
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url = "%s/" % url.rsplit("/", 1)[0]
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return self._get(url, "version")
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def get_current(self):
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try:
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return self._get_current()
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except exc.Unauthorized:
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# NOTE(sdague): RAX's repose configuration blocks access to the
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# versioned endpoint, which is definitely non-compliant behavior.
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# However, there is no defcore test for this yet. Remove this code
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# block once we land things in defcore.
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return None
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def list(self):
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"""List all versions."""
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# NOTE: "list versions" API needs to be accessed without base
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# URI (like "v2/{project-id}"), so here should be a scheme("http",
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# etc.) and a hostname.
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endpoint = self.api.client.get_endpoint()
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url = urllib.parse.urlparse(endpoint)
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version_url = '%s://%s/' % (url.scheme, url.netloc)
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return self._list(version_url, "versions")
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